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Why Do trampolines kill Grass, protect Grass using specific Trampolines

Why Do trampolines kill Grass, protect Grass using specific Trampolines

Show me kids or adults who hate trampolines. It is not just a time pass it is having an enjoyment bomb in your backyard. You blast it when your worries and tension attack you like enemies. 

But do you care about your lawn grass? Are they destroying because of the trampoline?

The answer to “Are trampolines affecting my lawn by killing grass” is “yes” as well as “no”

Yes, trampolines kill the grasses that need water and direct sunlight to survive. Trampoline acts as a barrier to the grass blocking moisture, and sun, making them yellow and die. Sometimes the heavy trampoline weight on the grass makes it sink demoting it to grow.

On the other hand, 

Trampolines can promote grass growth by providing a small environment to protect them from harsh weather conditions and excessive sunlight. The grass becomes more moisturized by having a trampoline mat over them so that they are not evaporated. 

You can protect your grass under the trampoline by many methods – moving the trampoline regularly, growing new grass, reflecting sun towards the grass, adding turf, placing organic material, soil and mulch, placing an artificial grass mat, and using an inground trampoline to gain peace of mind.

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Why Trampoline Kills Grass or Why Grass Die Under Trampoline? 

what are the reason of grass dying under the trampoline
what are the reasons for grass dying under the trampoline

Trampolines can kill the grass present beneath their mat. Grass needs an environment to grow and nourish, and trampoline acts as a barrier and prevents it from growing. 

There are 6 main reasons that grass are killed by trampolines or their growth is stunted which are

  1. No Sunlight to perform photosynthesis
  2. Heavy-weight trampoline Sinks the grass
  3. Presence of More Water in Low Lying Areas
  4. More Debris attraction under the Mat 
  5. Large-size trampoline damages the grass more than small trampolines
  6. Using Chemicals and Sprays during trampoline assembly or maintenance

Let’s discuss each one by one.

No Sunlight to perform photosynthesis

Grass species that require a significant amount of sunlight to survive are Bermuda Grass, Zoysia Grass, Buffalo Grass, Kentucky Bluegrass, Tall Fescue, Carpet Grass, Bahia Grass, Centipede Grass, Fountain Grass, and Empire Zoysia.

Grass needs sunlight to produce food for itself using photosynthesis. The role of sunlight is very important to prepare food. Trampoline mats acting like protective covers either blocking the whole sunlight or fading the sunlight affect this food-making process. 

A trampoline mat made of Propylene allows the sunlight to pass through, which helps the grass to get exposed to sunlight. 

On the other hand, old trampolines (made of rubber) block the sunlight, resulting in full blockage of sunlight to the grass underneath, demoting their life.

Heavy Weight Trampoline Sinks the Grass

the heavy weight of trampoline damages the grass and sinks the ground
the heavy weight of trampoline damages the grass and sinks the ground

The heavy weight of the trampoline and consistent jumping on the trampoline exerts a greater force on the place where its legs are present on the grass. 

Due to overuse or excessive weight, the legs crush the grass under them, and they sink the soil creating small sunken areas in the ground. 

These small sunken areas or low spots create drainage problems which we will discuss in the next section.

Poor Drainage

While watering your yard, some water goes to the uneven ground under the trampoline, or soil has been sunken by trampoline legs because of weight. This creates a big problem for grass if the water stays there for a longer time. 

Excessive water can damage grass leading to multiple problems – root rot, fungal diseases due to moisture, soil compaction, pest attraction towards the water, oxygen deprivation because of oversaturated water, and loss of more important nutrients that grass needs to survive. 

Debris or wastes under the Mat

throwing waste or collecting debris is harmful for grass health
throwing waste or collecting debris is harmful to grass health

Sometimes kids throw wastes or debris – leaves, branches or other organic materials that are very harmful to grass. Sometimes, we intentionally throw waste under the trampoline, as no one cares about objects thrown under the mat. 

But you should know that you are killing the grass by throwing debris or waste under the trampoline mat. They stunt the grass growth or even kill them in the following way

  • The debris blocks the total sunlight to grass, due to which they struggle to grow but can’t because of sun blockage by debris
  • No moisture or water is released from grass if debris/waste is stored under the trampoline. Water is an important element for grass to survive, but excessive water leads to problems – fungal growth, rotting, and attraction to pests. 
  • Debris or other waste material on grass blocks the air, which affect badly grass health. You should know that proper air circulation is both beneficial for soil and grass.
  • The organic substances in the debris can decay, and while decaying they release chemical gasses, which can harm the grass by changing the pH of the soil

Larger Size Trampolines Cause more damage to grass than small trampolines

It is proven that larger-sized trampolines damage the grass more badly than the smaller ones. The reason is larger trampoline provide more blockage to the sun. 

Having larger sizes, they carry more weight and exert increased force on grass and soil making soil contact. This increased force on the grass by legs sunk the grass, which resulted in water staying in the holes. 

That excessive water acts as a grass killer by attracting more pests and diseases. The soil becomes more contact because of heavy trampoline weight reducing the flow of air and nutrients movement in the soil. These all factors contribute to the death of grass.

Using Chemicals and Sprays during Trampoline Assembly or Maintenance

Different chemicals and sprays are applied to a trampoline for maintenance, to improve its functionality, and to use it for a longer time

Soaps and detergents are used while cleaning a trampoline. Rust protection spray is applied to a trampoline where this is a huge risk of corrosion. These all substances penetrate into the soil, causing damage to grass and soil. 

These all can be harmful to grass and plants. Sometimes, the harsh chemicals are so dangerous that they barren the soil completely. 

That is why, We recommend you to use eco-friendly cleaners that don’t harm the grass or soil.

How Trampolines promote the Grass present underneath them

trampoline can also help the grass to grow more present beneath them
Trampolines can also help the grass to grow more present beneath them

“Some people experienced their grass improved their growth while they were under trampoline”

You will be amazed to know, that some grass can grow and develop faster in the presence of a trampoline mat above them. So you don’t need to be worried while having a trampoline in your backyard and taking tension about your lawn aesthetics. 

Trampolines don’t kill the grass present underneath them because of the following 5 reasons.

  1. Trampolines are lightweight
  2. Grass is strong enough
  3. Trampolines have a small footprint
  4. You can protect your grass

Trampolines are heavy but not enough to kill grass

Trampolines are not so heavy to kill grass. They exert pressure on grass through their legs but that pressure is not too much to destroy the grass. Bermuda grass is known as strong grass that can survive under the weight of a trampoline. Many users experienced that the grass under the trampoline was neither killed nor damaged, as they were using a medium-sized trampoline or sometimes a rebounder for bouncing. Also for larger trampolines they mentioned, that the area of contact is too small to destroy the grass

Grass is Strong Enough

Certain types of grass – Fine and Tall Fescues, as well as Ryegrass,  are strong enough to survive under many conditions. They can grow enough they are under a trampoline for a certain amount of time without direct sunlight. 

Trampolines have smaller footprints

Compared to your lawn, a trampoline covers a small portion of your backyard. They can be above a certain area of grass but the grass can get some heat and sunlight through reflection from objects in the lawn.

You can protect your grass

Many people experienced that the grass under the trampoline grew faster and better. The reason they explained that they were safe from direct sunlight the sun didn’t evaporate all the present moisture from the soil, and they had enough watery soil to survive. They further explained that the trampoline provided an extra layer of security by protecting them from harsh weather behaviours.

9 Methods to Protect Grasses From Death Under Trampoline

To protect your grass under a trampoline, you have to follow some preventive measure which reduces the impact of a trampoline on your lawn. The 9  methods to keep grass safe under a trampoline mat are as follows

  1. Move your Trampoline In The Law Regularly
  2. Seed the Grass Regularly
  3. Regularly Mow Grass Under the Trampoline
  4. Add Synthetic Grass or Turf
  5. Place a Sprinkler Underneath your Trampoline
  6. Point Sunlight to the Grass Using A reflective Object
  7. Use in-ground / flat/sunken trampolines 
  8. Use the right type of Lawn and Grass
  9. Install Organic Material Mulch Under Your Trampoline

Move your Trampoline In The Law Regularly

You should displace your trampoline after some time to protect the grass from dying. But how often, the answer is. 

Move your trampoline with every mow, which means more displacing your trampoline in the growing season – spring and summer and less relocating in cool weather. Also immediately change the location of the trampoline if you notice the grass is turning yellow or fading.

Moving your trampoline benefits the grass to grow, as grass can die without sun exposure for an extended time. Using this method, the soil will not be compacted for a longer time, as trampoline legs present on grass for a longer time exert crushing force over them, leading them to damage harshly or even death.

This method is very easy, you don’t need to carry additional equipment. But it can be hard and labour-intensive if your trampoline is heavy or your backyard is small. 

You can add a wheel to the trampoline if it is too heavy. For that, you should invest some money and time, and after that, you can easily move your trampoline in your yard according to your own choice.

Seed the Grass Regularly

Sowing fresh grass seeds after noticing that your existing grass is turning yellow, and they are going to die keeps your grass growing more developed. This method is very simple, you need to have seeds of grass and plant them under the trampoline mat. Maybe the existing grass has started to get damaged, but not fully, the processing of seeding will grow new grass, making the overall lawn look more aesthetic.

This method performs extra care and maintenance for seeding, also you have to find the perfect situations to grow the seeds properly.

Regularly Mow Grass Under Trampoline

Mowing the grass makes the grass healthier. It provides the same energy and strength as we get from exercise. Mowing stimulates root development. 

You should not cut the grass very deeply, make it a bit tall, and it will be more resilient

To cure the grass under your trampoline, you have multiple options, get inside the trampoline and cut the grass using a lawnmower, use a lawnmower with adjustable handles, try a manual reel mower, or use a robotic mower. 

Although you may find it difficult to mow under the trampoline, you have two methods

  1. Get under the trampoline and start cutting the grass
  2. Displace the trampoline from its area, perform the mowing activity, and then place the again trampoline in its own place.

Add Synthetic Grass or Turf

“This method is for lazy people like me”. 

Sometimes it becomes tough to maintain the grass and the lawn. That is why we recommend you add synthetic grass or turf under the trampoline. Synthetic grass is more appealing than natural grass, it needs some initial cost to put under the mat.

Once you place it, you don’t care about grass maintenance, protecting it from harsh weather – sun, rain, watering, fertilizing, mowing. They work for a longer time and don’t get worn out easily. 

The cons of using grass mats or turf are that, they become hotter in sunlight making it difficult to walk, and they have negative effects – microplastic pollution on the environment when they are worn down.

Place a Sprinkler Underneath your Trampoline

Placing a sprinkler under the trampoline maintains the grass by keeping it moisturized and preventing it from dying through drying. The process is simple, install a sprinkler under the trampoline and turn on it when needed. Make sure to water grass to the limit by maintaining the drainage system, Otherwise, it can stimulate fungi and pests growth to damage your grass. 

This method provides moisture to grass, making it healthier in hot weather and making the trampoline more comfortable to use in heat.

Adding a sprinkler under a trampoline has some drawbacks which are: Your trampoline can corrode or become slippery by consistent exposure to water, Also you may have to pay extra water bills.

Point Sunlight to the Grass Using A reflective Object

Focusing sunlight using a reflective object on the grass under the trampoline provides grass with exposure to heat and sunlight. Use a mirror to point light to the grass, the same as we as kids used to tease our elders by pointing sunlight to their eyes. 

This method promotes grass to perform the photosynthesis process making them healthier. The method’s effectiveness depends upon the type of reflective device, the angle of decor, and the intensity of sunlight. 

Use in-ground / flat/sunken trampolines 

Install in-ground / flat/sunken trampolines if you are really serious about backyard beauty, grass health, and quality trampoline safety in harsh weather. Inground trampolines are the best options as there is no trampoline maintenance, no mowing grass, enhanced user safety, good good-looking backyard, protection from blowing away in strong winds, and more fun and enjoyment.

Use the right type of Lawn and Grass

For grass maintenance, use certain types of grass such as Fine Fescues, Tall Fescues, and Ryegrass that can survive in a shaded environment. That means you can grow these grasses without moving your trampoline as they can thrive in faded sunlight. 

Fine Fescues can’t grow well in long-timed damped soil, they grow more in dry soil. 

You can plant Tall Fescues on less fertile soil, and they can survive in an extreme drought situation.

Ryegrass can grow in shaded light, but it prefers direct sunlight, they can’t thrive in fully shaded areas. So you can point to a reflective mirror if you have Ryegrass under the trampoline. 

Install Organic Material such as Mulch, Sand, or Bark Under Your Trampoline

Installing organic material such as mulch, sand, or bark under the trampoline protects the grass from trampoline-exerted force. They also provide a sustainable environment for grass – Zoysiagrass, St. Augustinegrass, Centipedegrass,  Perennial ryegrass, Tall fescue, Rough bluegrass (Poa trivialis), Carpetgrass, and Fine-leaf fescue to grow in the shaded light. 

You should understand, that the above-mentioned grass can tolerate dim light or shaded sunlight, but to keep them healthy, you should at least expose them to sunlight for a certain amount of time. Otherwise, they can die if you are not providing enough sun exposure for a longer time.

What are the best Trampolines that don’t kill the grass or Damage the lawn

The best trampolines that don’t damage the lawn and protect the grass making your yard more aesthetically appealing should have certain properties which are given below

  1. The best Trampolines are Inground Trampolines.
  2. It should be light to move from one place to another
  3. A smaller size
  4. Have mesh breathable surface
  5. Need to be installed on Soft ground, rather than Concrete
  6. The mat should be UV-resistant to block harmful rays directly accessing grass

Inground trampolines

Install inground trampolines in your backyard, if you are serious about grass health, law beauty, trampoline and your kids’ safety, and increased fun. Inground trampolines are the best choice as they are flat to the ground, looking more nice providing increased fun while bouncing. But they come with some drawbacks – increased cost of installation, harmful species like snakes in the pit, and proper maintenance. 

Lightweight and Movable

Your trampoline should not be so heavy to exert more pressure on grass. The lightweight features enable the trampoline to move in the yard to get the grass to rise again which was crushed by its legs. You can add wheels to trampolines to move more easily but requires some initial budget and hardwork. The yard dimensions also matter while moving your trampoline.

Trampolines of Smaller Size 

Big trampolines having greater surface area block sunlight access to the grass below them. Use smaller trampolines that are easy to store inside in harsh weather, less expensive, and more fun. You can use small trampolines – rebounders, or mini trampolines. Having small size, they don’t harm grass very badly.

Trampolines with a breathable surface

Some trampolines are designed to have a mesh or springless design, and they pass the air and light to the grass below. This breathable surface allows the grass to grow more rapidly in the sunlight and air. 

No concrete need for installation

Mostly, trampolines need a gentle ground for installation, rather than being installed on concrete. That means the trampolines are more gentler on your grassroots.

UV-Resistant Mat

A UV-resistant trampoline can easily protect grass from the sun’s harmful radiation. These radiations are harmful to grass, as the mat filters out the harmful rays, and passes the filtered radiation, or blocks the radiation only providing the heat to the grass.

Final thoughts

The relation between trampoline and grass is positive as well as negative. A trampoline can be helpful to grass, promoting their growth by providing them benefits – moisture retention, and grass protection from weather and humans. 

But trampolines can also kill the grass by blocking the sunlight, exerting more force on grass, creating small sinks resulting in poor drainage of water which encourages fungi and diseases to grow, and chemical exposure to sprays and chemicals during maintenance. 

But your job is to make your lawn more attractive, you should move the trampoline periodically, mow the grass, seed more grass, install a sprinkler system under the trampoline, redirect sunlight towards the grass, use synthetic grass mats, and choose the grass which can survive in low dim light.


How to prepare your lawn for a trampoline?

To prepare your lawn for a trampoline so that its aesthetics are not damaged you need to pick a location that is safe, have fences around the trampoline to block unauthorized access from smaller kids, clear the area, level the ground, and use ground protection – rubber mulch or trampoline specific padding. For grass protection, try to move your trampoline periodically.

Where’s The Best Place In The Yard To Put The Trampoline, so that the grass is not damaged?

The best place to put a trampoline in the backyard, so that grass is not damaged or killed is grassy ground level, away from property, fences, and trees, having direct sunlight access, levelled place having a proper drainage system, and a surface that is neither too soft nor too hard.

How to Repair the Lawn if the trampoline has Damaged the Grass?

You can repair your lawn grass damaged by the trampoline by consistently mowing the grass, removing the dead grass, seeding or overseeding new grass, loosening the soil, adding topsoil or compost, fertilizing, watering, and properly maintaining.

Can I put the trampoline on the grass?

Yes, you can put a trampoline on grass, but be aware of damages made to grass, either damage or death. That is why you are directed to follow all the above directions to keep the grass growing resulting in adding more beauty to your yard.

Why Does Grass Grow Faster Under A Trampoline?

Sometimes, grass grows faster under a trampoline, the reason is grass species, amount of light and air, no moisture evaporating, and protection from harsh weather. Some grass species like Tall Fescues can grow in dim or faded light. They receive filtered sunlight means they are not exposed directly to ultraviolet or excessive situations. Also, they are not crushed by strong wind gusts and they get more moisture soil rather than water being evaporated by sun.


  • Dr. Sabina Rogers

    Dr. Sabina Rogers brings 15+ years of global health experience to's mission. After completing her MPH at Johns Hopkins University, she led international development projects worldwide. Her work with organizations like CARE, FINCA International, and the Peace Corps focused on co-creating sustainable health, education, finance, and empowerment solutions. Dr. Rogers is devoted to project management and building cross-cultural collaborations.